PCM Locations

NOTE: For PCM Removal and Installation procedures, refer to ELECTRONIC ENGINE CONTROLS .

Focus - passenger side behind the kick panel.
Five Hundred, Freestyle, Montego - engine compartment, driver side, mounted to the cowl.
Taurus, Sable, Freestar, Monterey - behind the glove compartment (access from the engine compartment dash panel) on the passenger side.
Mustang - front of engine compartment, passenger side, near fender, under the battery junction box.
Crown Victoria, Grand Marquis, Town Car - engine compartment, driver side, fender mounted.
LS, Thunderbird, Explorer, Mountaineer, Aviator - passenger side, near side cowl, behind the glove compartment.
Ford GT - engine compartment, driver side, behind the driver seat, quarter panel mounted.
Escape, Mariner, Explorer Sport Trac, Ranger - behind the instrument panel (cowl), center to both driver and passenger sides (access from the engine compartment).
Expedition, Navigator, F-Series, F-Super Duty - passenger side of the engine compartment, mounted to the cowl.
Excursion - lower dash panel on the driver side.
E-Series - engine compartment, driver side, near the cowl (access from the engine compartment).

Fig 1: 104-Pin PCM
Courtesy of FORD MOTOR CO.

104-PIN PCM POWER AND GROUNDS

Fig 2: Identifying 150-Pin PCM Connectors/Terminals

Courtesy of FORD MOTOR CO.

150-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B32
VPWR	Voltage input to module	B33
PWRGND	Power ground	B24
PWRGND	Power ground	B25
PWRGND	Power ground	B26
PWRGND	Power ground	B27
CSEGND	Case ground	B43
SIGRTN	Connector B signal return	B17 (B5 for LS/Thunderbird)
SIGRTN	Connector T signal return	T17 (T14 for LS/Thunderbird)
SIGRTN	Connector E signal return	E17
VREF	Connector B buffered 5.0-volt reference	B20 (B55 for LS/Thunderbird)
VREF	Connector E buffered 5.0-volt reference	E20 (E14 for LS/Thunderbird)
KAPWR	Keep alive power	B44

Fig 3: Identifying Powertrain Control Module Connectors/Terminals

Courtesy of FORD MOTOR CO.

150-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B35
VPWR	Voltage input to module	B36
PWRGND	Power ground	B47
PWRGND	Power ground	B48
PWRGND	Power ground	B49
CSEGND	Case ground	B10
SIGRTN	Connector B signal return	B41
SIGRTN	Connector T signal return	T41
SIGRTN	Connector E signal return	E41
VREF	Connector buffered 5.0-volt reference	B40
VREF	Connector E buffered 5.0-volt reference	E40
KAPWR	Keep alive power	B45

Fig 4: 170-Pin PCM

Courtesy of FORD MOTOR CO.

170-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module
VPWR	Voltage input to module	B35
VPWR	Voltage input to module	B36
VPWR	Voltage input to module	T39
PWRGND	Power ground	B47
PWRGND	Power ground	B48
PWRGND	Power ground	B49
PWRGND	Power ground	B50
CSEGND	Case ground	B10
SIGRTN	Connector B signal return	B41
SIGRTN	Connector B signal return	B43
SIGRTN	Connector E signal return	E33
SIGRTN	Connector E signal return	E58
SIGRTN	Connector T signal return	T41
VREF	Connector B buffered 5.0-volt reference	B40
VREF	Connector E buffered 5.0-volt reference	E57
KAPWR	Keep alive power	B45

Fig 5: Identifying 190-Pin PCM Connectors/Terminals

Courtesy of FORD MOTOR CO.

190-PIN PCM POWER AND GROUNDS

Function	Description	Connector/Pin
VPWR	Voltage input to module	B51
VPWR	Voltage input to module	B52
VPWR	Voltage input to module	B53
PWRGND	Power ground	B67
PWRGND	Power ground	B68
PWRGND	Power ground	B69
PWRGND	Power ground	B70
CSEGND	Case ground	B66
SIGRTN	Connector B signal return	B58
SIGRTN	Connector T signal return	T43
SIGRTN	Connector E signal return	E58
VREF	Connector B buffered 5.0-volt reference	B29
VREF	Connector E buffered 5.0-volt reference	E57
KAPWR	Keep alive power	B54